PENGARUH ABU SEKAM KAYU PADA NILAI UNCONFINED COMPRESSION STRENGTH LEMPUNG PLASTISITAS TINGGI TERSTABILISASI SEMEN KAPUR

Abstrak Perbaikan lempung dengan semen, kapur, dan abu sekam (RHA) terbukti meningkatkan kuat geser daya dukung. Kandungan silika kayu (ASK) hampir sama RHA. Penelitian melihat pengaruh ASK pada terstabilisasi semen kapur. Pengujian Tekan bebas (UCS) dilakukan untuk membandingkan nilai tekan (qu) asli, distabilisasi kombinasi kapur dan/atau ASK. Sampel diuji empat kondisi. Hasil UCS tanpa pemeraman, qu seragam. Pada kondisi pemeraman perendaman, semua variasi relatif sama. berkisar 365 kPa sampai 485 campuran Penambahan 10% lebih 1100 kPa. membuktikan, optimal dibanding Penggantian 4% 6% menjadi (rendaman) 475 (tanpa rendaman). Kata kunci: Abu Kayu, Kapur, lempung, stabilisasi Abstract Clay stabilized with cement, lime, and rice hush ash has been increasing shear strength bearing capacity. The silica content of wood husk is almost the same as study seen effect on clay-cement lime. Unconfined Compression Strength performed compare unconfining values clay, clay-cement, cement lime and/or was tested four conditions. results without watering, uniform value. Conditions non-curing soaked, all variations are relatively same. In curing unsoaked conditions, range from to for Adding increases value more than Stabilized increase qu. Subtitution (soaked) (unsoaked). Keywords: sawdust ash, stabilization